An atomic element is an element that exists in nature with single atoms as their basic units. A molecular element is an element that exists in nature with diatomic or polyatomic molecules as their basic unit. An ionic compound is a compound composed of cations and anions bound together by electrostatic attractions. A molecular compound is a compound composed of two or more covalently bonded nonmetals.
Work Step by Step
Gold is an example of an atomic element ($Au$). Diatomic chlorine is an example of a molecular element ($Cl_2$). Sodium chloride is an example of an ionic compound ($NaCl$). Carbon dioxide is an example of a molecular compound ($CO_2$).